Cita APA (7a ed.)

Nelson, E. (1917). The Secondary School and The University (1a. ed.). [s.n.].

Cita Chicago Style (17a ed.)

Nelson, Ernesto. The Secondary School and The University. 1a. ed. Washington: [s.n.], 1917.

Cita MLA (9a ed.)

Nelson, Ernesto. The Secondary School and The University. 1a. ed. [s.n.], 1917.

Precaución: Estas citas no son 100% exactas.